package com.gitee.cliveyuan.tools.img;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class ImageConvertTools {

    private static BASE64Encoder encoder = new sun.misc.BASE64Encoder();
    private static BASE64Decoder decoder = new sun.misc.BASE64Decoder();


    /**
     * 将其他格式的图片转换成CDR或其它文件格式
     *
     * @param sourceFileName
     * @param newFileName
     */
    static void convert(String sourceFileName, String newFileName) {
        try {
            String base64String = getImageBinary(sourceFileName);
            byte[] bytes1 = decoder.decodeBuffer(base64String);
            ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes1);
            BufferedImage bi1 = ImageIO.read(inputStream);
            File w2 = new File(newFileName);//可以是jpg,png,gif格式
            ImageIO.write(bi1, getFileType(sourceFileName), w2);//不管输出什么格式图片，此处不需改动
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static String getImageBinary(String fileName) {
        File f = new File(fileName);
        BufferedImage bi;
        try {
            bi = ImageIO.read(f);
            String fileType = getFileType(fileName);
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            ImageIO.write(bi, fileType, outputStream);
            byte[] bytes = outputStream.toByteArray();

            return encoder.encodeBuffer(bytes).trim();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    private static String getFileType(String fileName) {
        return fileName.substring(fileName.indexOf(".") + 1, fileName.length());
    }


}
